code-generator/client-gen: decouple core group from package name 'api'

Signed-off-by: Dr. Stefan Schimanski <stefan.schimanski@gmail.com>

pkg/apis/core/doc.go

@@ -15,6 +15,7 @@ limitations under the License.
 */
 
 // +k8s:deepcopy-gen=package
+// +groupName=
 
 // Package core contains the latest (or "internal") version of the
 // Kubernetes API objects. This is the API objects as represented in memory.

staging/src/k8s.io/api/core/v1/doc.go

@@ -18,6 +18,7 @@ limitations under the License.
 // +k8s:deepcopy-gen=package
 // +k8s:protobuf-gen=package
 // +k8s:prerelease-lifecycle-gen=true
+// +groupName=
 
 // Package v1 is the v1 version of the core API.
 package v1 // import "k8s.io/api/core/v1"

staging/src/k8s.io/code-generator/cmd/client-gen/args/gvpackages_test.go

@@ -71,9 +71,9 @@ func TestGVPackageFlag(t *testing.T) {
 		{
 			args: []string{"api/v1", "api"},
 			expectedGroups: []types.GroupVersions{
-				{PackageName: "core", Group: types.Group("api"), Versions: []types.PackageVersion{
+				{PackageName: "api", Group: types.Group("api"), Versions: []types.PackageVersion{
-					{Version: "v1", Package: "core/v1"},
+					{Version: "v1", Package: "api/v1"},
-					{Version: "", Package: "core"},
+					{Version: "", Package: "api"},
 				}},
 			},
 		},

staging/src/k8s.io/code-generator/cmd/client-gen/generators/generator_for_group.go

@@ -71,31 +71,25 @@ func (g *genGroup) Imports(c *generator.Context) (imports []string) {
 func (g *genGroup) GenerateType(c *generator.Context, t *types.Type, w io.Writer) error {
 	sw := generator.NewSnippetWriter(w, c, "$", "$")
 
-	apiPath := func(group string) string {
-		if group == "core" {
-			return `"/api"`
-		}
-		return `"` + g.apiPath + `"`
-	}
-
-	groupName := g.group
-	if g.group == "core" {
-		groupName = ""
-	}
 	// allow user to define a group name that's different from the one parsed from the directory.
 	p := c.Universe.Package(g.inputPackage)
+	groupName := g.group
 	if override := gengo.ExtractCommentTags("+", p.Comments)["groupName"]; override != nil {
 		groupName = override[0]
 	}
 
+	apiPath := `"` + g.apiPath + `"`
+	if groupName == "" {
+		apiPath = `"/api"`
+	}
+
 	m := map[string]interface{}{
-		"group":                            g.group,
 		"version":                          g.version,
 		"groupName":                        groupName,
 		"GroupGoName":                      g.groupGoName,
 		"Version":                          namer.IC(g.version),
 		"types":                            g.types,
-		"apiPath":                          apiPath(g.group),
+		"apiPath":                          apiPath,
 		"schemaGroupVersion":               c.Universe.Type(types.Name{Package: "k8s.io/apimachinery/pkg/runtime/schema", Name: "GroupVersion"}),
 		"runtimeAPIVersionInternal":        c.Universe.Variable(types.Name{Package: "k8s.io/apimachinery/pkg/runtime", Name: "APIVersionInternal"}),
 		"restConfig":                       c.Universe.Type(types.Name{Package: "k8s.io/client-go/rest", Name: "Config"}),

staging/src/k8s.io/code-generator/cmd/client-gen/types/types.go

@@ -42,7 +42,7 @@ func (g Group) String() string {
 }
 
 func (g Group) NonEmpty() string {
-	if g == "api" {
+	if g == "" {
 		return "core"
 	}
 	return string(g)
@@ -76,7 +76,7 @@ type GroupVersionKind struct {
 }
 
 func (gv GroupVersion) ToAPIVersion() string {
-	if len(gv.Group) > 0 && gv.Group.NonEmpty() != "core" {
+	if len(gv.Group) > 0 && gv.Group != "" {
 		return gv.Group.String() + "/" + gv.Version.String()
 	} else {
 		return gv.Version.String()

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/doc.go

@@ -15,5 +15,6 @@ limitations under the License.
 */
 
 // +k8s:deepcopy-gen=package
+// +groupName=
 
 package core // import "k8s.io/code-generator/examples/apiserver/apis/core"

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/v1/doc.go

@@ -18,5 +18,6 @@ limitations under the License.
 // +k8s:deepcopy-gen=package
 // +k8s:defaulter-gen=TypeMeta
 // +k8s:conversion-gen=k8s.io/code-generator/examples/apiserver/apis/core
+// +groupName=
 
 package v1 // import "k8s.io/code-generator/examples/apiserver/apis/core/v1"